High-frequency screen

Description

High frequency screen (high quality screen) is the use of self-synchronous vibrator excitation, under the action of the vibrator, the screen machine to do high frequency reciprocating linear motion, screening frequency is high, small amplitude, high efficiency, is an effective equipment for fine material screening and grading. The high-frequency screen uses a high frequency to destroy the tension on the surface of the pulp and the high speed vibration of the fine particle material on the screen surface, accelerates the useful minerals with a relatively large density and the separation effect, improves the probability of contact between the material and the screen size less than the separated particle size, resulting in better separation conditions, so that the material less than the separated particle size, especially the high-density material and the pulp are screened through the screen together.

Performance Advantages

• 01
  New structural design: Using a new principle design, is a new structure of screen surface vibrating screening machinery, generally using nylon or stainless steel screen plate.
• 02
  High vibration strength: screen surface vibration frequency 50Hz, amplitude 0~ 2mm, vibration strength is 8~10 times the acceleration of gravity, which is 2~3 times the vibration strength of general mechanical vibrating screen.
• 03
  High screening efficiency, not easy to plug holes: the screen surface is not easy to plug holes, high screening efficiency, large processing capacity, especially suitable for the screening of fine powder materials, grading particle size 0.074~1mm.
• 04
  Convenient installation and adjustable Angle: The whole machine is supported by vibration reduction, so that the ground basically does not bear dynamic load, does not need to make a foundation, and is directly installed on the solid and flat ground, or the ordinary steel structure platform can work normally. The screen installation Angle is convenient and adjustable, and the screen Angle can be adjusted according to the required mineral size.

Working Principle

The high frequency screen is used for the fine grade operation in the grinding and grading process of the concentrator. The material is graded according to the particle size by the width of the grate on the screen surface. In the grinding circuit, the grinding product is controlled and graded, and the coarse grain connected body is screened out, and the material on the screen is returned to the mill for grinding. Fine particles, that is, under the screen, can be discharged in time to avoid excessive crushing caused by re-grinding. Timely screening to meet the fineness requirements of the material, can improve the mill output, reduce energy consumption, benefit. The high frequency screen installed in the beneficiation circuit can screen out the coarse concentrate and send it to the mill for re-grinding, and the fine particles under the sieve can be selected, so the grade of the concentrate can be significantly improved.

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Question&Answer

Q:What is a high frequency screen?

A:High-frequency screen, also known as high-frequency vibrating screen, high-frequency vibration screen, is a high-quality vibrating screen equipment, mainly used for the screening of granular materials, filtration, drying, dehumidification and other processes, its working principle is through the vibrating screen surface, the material is separated into different sizes of particles, and then classified according to the size of the particles.

Q:What about abnormal material flow?

A:The screen box stiffness is insufficient and there is a critical frequency. The connection bolt is seriously loose or loose. Tighten it immediately. The horizontal level of the screen box was not found. If a fault is found from the support seat of the support foot spring or the spring itself, replacing the spring or changing the support seat size, as long as the screen is replaced, it may cause screen damage. If the horizontal level is not found due to insufficient screen box stiffness, it will cause the beam to break. If it is still running, it will also cause the material to flow abnormally. It may also be due to improper operation and unbalanced feeding.

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